While multiple Republican presidential candidates expressed their generally negative responses to the recent Iran nuclear deal, the Democrat front-runner, however, has been conspicuously silent on the issue.

As MSNBC correspondent Kristen Welker recently explained, she attempted to get a reaction from Hillary Clinton following a briefing but instead got an evasive answer followed by a cold stare. The uncomfortable exchange was captured on camera and aired Tuesday on Live with Thomas Roberts.

“Secretary Clinton,” Welker asked as the candidate and her entourage walked by, “any takeaways from your briefing on Iran?”

When Welker attempted a follow-up question, Clinton continued walking, staring straight ahead with a wide smile on her face. The unusual interaction reportedly continued off camera as Clinton repeatedly refused to reveal her opinion of the agreement.

“I asked her that question several times today,” Welker said. “She wouldn’t answer that question.”

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Welker has previously criticized Clinton publicly for her evasiveness on the campaign trail. Earlier this year, she cornered the candidate in Iowa to ask what she planned to do differently this year to attract more voters.

“I’m having a great time,” Clinton replied. “Can’t look forward, uh, any more than I am. Thank you.”